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    <title>Document</title>
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    <script>
        //引用类型 11

        //1.普通对象 Object   键值对 key(键):value(值),
        var obj={
            name:"lili",
            age:18,
            num:1001,
            bol:true
        }

        console.log(obj);

        //2.数组 Array  索引下标index(0,1,2....)  length 数组的长度
        var arr=["hello",true,10,null];
        console.log(arr);
        console.log(arr[1]);
        console.log(arr.length);

        //3. Date 日期
        var date=new Date();
        console.log(date);

        //4.正则 RegExp
        var reg=/1[3-9]\d{9}/;
        console.log(reg);
    </script>
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